Struct ArrayFrom 

pub struct ArrayFrom<T>(pub T);

💱 🫗 Compile-time conversion from slice-like types to arrays.

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^{📍 data/layout/array}

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Features

Uses Ptr::copy_nonoverlapping internally when unsafe operations are allowed.

Panics

When N does not match the actual length of the input.

Examples

let arr = ArrayFrom("hello").to_array::<5>();
assert_eq!(arr, *b"hello");

Used in const_join! implementation.

Tuple Fields

0: T

Implementations

impl ArrayFrom<u8>

pub const fn len(self) -> usize

Returns 1 (length of single byte).

pub const fn to_array<const N: usize>(self) -> [u8; N]

Converts to [u8; N] (must have N == 1).

impl<const L: usize> ArrayFrom<[u8; L]>

pub const fn len(&self) -> usize

Returns array length.

pub const fn to_array<const N: usize>(&self) -> [u8; N]

Converts to [u8; N] (must have N == len()).

impl<const L: usize> ArrayFrom<&[u8; L]>

pub const fn len(&self) -> usize

Returns L (array length).

pub const fn to_array<const N: usize>(&self) -> [u8; N]

Converts to [u8; N] (must have N == L).

impl ArrayFrom<&[u8]>

pub const fn len(&self) -> usize

Returns slice length.

pub const fn to_array<const N: usize>(&self) -> [u8; N]

Converts to [u8; N] (must have N == len()).

impl ArrayFrom<&[&[u8]]>

pub const fn len(&self) -> usize

Returns total length of all slices.

pub const fn to_array<const N: usize>(&self) -> [u8; N]

Concatenates into [u8; N] (must have N == len()).

impl ArrayFrom<&str>

pub const fn len(&self) -> usize

Returns byte length.

pub const fn to_array<const N: usize>(&self) -> [u8; N]

Converts to [u8; N] (must have N == len()).

impl ArrayFrom<&[&str]>

pub const fn len(&self) -> usize

Returns total length of all string slices.

pub const fn to_array<const N: usize>(&self) -> [u8; N]

Concatenates into [u8; N] (must have N == len()).

Trait Implementations

impl<T: Debug> Debug for ArrayFrom<T>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.